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 $boot_device = q awk 'FNR == 2 { print $1 }'; 
 $boot_device = `$boot_device`; 
...
 $UUID_boot = q awk '{ print $2 }' | sed 's/"//g';
 $UUID_boot = `$UUID_boot`; 
 $print "$UUID_boot\n";

blkid $boot_device | awk '{ print $2 }' | sed 's/"//g'

blkid /dev/md126p1 | awk '{ print }' | sed 's/"//g'